Make the gameobject flip to the direction it is being dragged to?

     float h = Input.GetAxis("Mouse Y");

     if(h > 0 && !facingRight)
         Flip();
     else if(h < 0 && facingRight)
         Flip();

I got this from the tutorial but when I use this the game object flips not when it's being dragged but whenever you move the mouse and sometimes very randomly. Is there a way to make the gameobject face the direction it is being dragged to?